56 



between the middle one and the lateral ones) continued back on 

 the head nearly to the level of the hind margin of the eyes and 

 there ending abruptly— as in L. cofos,-!?f«,'Pasc.— (instead of 

 gradually merging into the general surface of tlie head about at 

 the level of the front of the eyes), the rostral sorobes wide behind 

 and not clearly defined, and the fifth interstice of each elytron in 

 themale not at all tuberculate, and at most only very feebly 

 carinate, and in the female appearing as a feeble or moderate 

 carina tuberculiform only to the extent of being more or less 

 broken about the middle of its length into detached pieces, whicli 

 appear somewhat like very obtuse feebly raised tubercles ; in 

 many examples of the male the fifth interstice does not differ 

 from the fourth and sixtli. Closely compared with L. tribulus 

 the rostrum is seen to be much stouter, tlie prothorax to be much 

 more widely and less definedly canaliculate with the channel 

 traversed longitudinally by a carina (which is wanting in tribulus), 

 the two rows of tubercles next the suture («'.«., one on either 

 side of it) gently approximating hind ward, the two tubercles 

 ad.joining (on either side) the suture a little in front of the apex 

 less close to ea,cli other (although much nearer to each other than 

 they would be if they were in the line of the tubercles on the 

 third interstice), and the sterna very differently sculptured. The 

 humeral angles of the elytra are acute and directed forward, 

 while in tribulus they are rounded off. 



The only other previously described species that this one seems 

 to resemble at all closely is L. Duboulayi, Pasc. (from Champion 

 Bay).^ I have not to my knowledge seen tliat insect, and tlio 

 description of it is almost useless. With unaccountable oddity, 

 Mr. Pascoe founded the species on the female, although he men- 

 tions having the male before him. He says that Duboulayi 

 resembles tribulus, but differs by its protlioracic cliannel being of 

 other form (deep in fi'ont and wide behind), and the third and 

 fifth interstices of the elytra being tuberculate only in the hinder 

 part, neithei- of which characters fits the present insect satis- 

 factorily (especially if, as Mr. Pascoe implies, they distinguisli 

 both sexes). Tf this insect, moreover, were Duboulayi it seems 

 impossible that Mr. Pascoe could have compared it with tribulus, 

 and not have noticed the difference in the rostral carinas, the 

 stoutness of the rostrum, etc 



The tubercles on the elytra are of much the same size ajid 



shape as the corresponding tubercles in the same sex of tribulus. 



B>aser Range ; appears to be common. 



mucus, sp. nov. Pnecedenti (L. biordiuato) aflfinis ; differt 



elytris multo magis crasse sculpturatis (interstitio 5° etiaiii 



niaris tuberculis distinctis nonnullis armatis, interstitiis 2° 



4° 6° que vix continuis), forma magis convexa ad latera 



L. 



